“Well, remember how recently Schweitzer and Horner found some interesting bone matter pertaining to tyrannosaurids?
Well, they held back a bit because there was something REALLY weird in there they wanted to go over.
Do you know what it was?
It was a special layer inside the femural bone, a calcium-rich layer that lines the marrow and is tied into the egg laying process.
It's called the medullary bone.
But guess what?
Only birds have medullary bone. No other animal group that lays eggs (or doesn't lay eggs, for that matter) has medullary bone. It's *specifically* avian, and not seen in any other reptiles.
So, place your bets on how creationist bodies are going to react to this.
I'm guessing it'll be another Ziuyo-Maru corpse all over - "elastoidin *could* have been in plesiosaurs, you can't prove it wasn't - other than no other living animals having it, and it only being found in one specific group of vertebrates.."”
- Viashino